import init #导入其他的类

def sum(arg1,arg2):
    total = arg1 + arg2
    print ("函数内:",total)
    return total

a = sum(10,20)
print(a)


sum = lambda arg1,arg2:arg1 + arg2
print(sum(20,1))

print(init.s(1,2))

#__name__
print(__name__)